CN109151363A - A kind of method and its transmission device of network cable transmission audio-video signal and serial signal - Google Patents
A kind of method and its transmission device of network cable transmission audio-video signal and serial signal Download PDFInfo
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- CN109151363A CN109151363A CN201710444438.2A CN201710444438A CN109151363A CN 109151363 A CN109151363 A CN 109151363A CN 201710444438 A CN201710444438 A CN 201710444438A CN 109151363 A CN109151363 A CN 109151363A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008878 coupling Effects 0.000 claims abstract description 44
- 238000010168 coupling process Methods 0.000 claims abstract description 44
- 238000005859 coupling reaction Methods 0.000 claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 6
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- General Physics & Mathematics (AREA)
- Information Transfer Systems (AREA)
Abstract
The present invention relates to communication transmission field, it is to provide the method and its transmission device of a kind of network cable transmission audio-video signal and serial signal.The transmission device includes: master machine, cable, transmitting terminal, pass through filter circuit inside master machine for usb signal and controls in signal dc-couple to cable and be transferred to transmitting terminal, transmitting terminal passes through ac-coupled circuit, audio-video signal is coupled on cable by DC coupling circuit and filter circuit is transferred to master machine, to realize that, using cable simultaneous transmission audio-video signal, usb signal and control signal, the present invention is transmitted audio-video signal, usb signal and control signal by a cable using simple coupling circuit.Convenient, fast, strong applicability, may be implemented the transmission and control of relatively long distance, and may be implemented to carry out Time-sharing control to multiple computers host.
Description
Technical field
The present invention relates to communication transmission field more particularly to a kind of methods of network cable transmission audio-video signal and serial signal
And its transmission device.
Background technique
With HDMI in the market, DVI interface it is universal, the various hosts such as various servers, computer, notebook are more and more
Use HDMI and DVI interface.At some occasions (such as computer room, classroom), need to carry out various hosts within the scope of certain distance
Control even carries out Time-sharing control to multiple host.In order to save space and resource, KVM switcher is used at present, and use is a set of
Keyboard and mouse display carries out Time-sharing control to multiple host, however KVM switcher there are wiring quantity more, heavy, transmission distance
From it is limited the problems such as.
Therefore, the present invention proposes to carry out transmission control, simultaneous transmission audio-video signal and usb signal, control using cable
The serial signals such as signal.
Summary of the invention
The purpose of the present invention is to provide the methods and its transmission of a kind of network cable transmission audio-video signal and serial signal to set
It is standby, be characterized in particular in provide it is a kind of by single cable simultaneous transmission audio-video signal and usb signal, control the serial signals such as signal
Transmission device corresponding to method and this method to be controlled various host computers.
In order to achieve the above objectives, the present invention adopts the following technical scheme: a kind of network cable transmission audio-video signal and serial letter
Number method: 4 pairs of audio-video AC differential signals in audio video transmission signal are passed through eight transmission lines of cable by transmitting terminal
It is transferred to master machine, master machine filters other low frequencies, DC component using ac-coupled circuit, extracts audio-video AC differential
Signal；HPD signal and I2C control signal in audio-video signal are handled in the audio-video signal processor of transmitting terminal.
Meanwhile usb signal is processed into serial signal, serial signal is then passed through filter circuit and DC coupling circuit
It is coupled on the 7th transmission line and the 8th transmission line of cable, passes through dc-couple and filter circuit in the other end of cable, also
Original goes out usb signal.
Further, the HPD signal in audio-video signal can also be coupled to by filter circuit and DC coupling circuit
The third transmission line of cable, I2C control signal are coupled to the 4th transmission line of cable by filter circuit and DC coupling circuit
On the 5th transmission line, at the same the other end of cable pass through DC coupling circuit and filter circuit, restore HPD signal and
I2C controls signal.
Further, 4 pairs of audio-video AC differential signals in audio-video signal can be carried out by signal amplification circuit
Amplification, is then transmitted by cable again.
Further, control signal and usb signal can be processed into serial signal by master machine, and be arrived by network cable transmission
Transmitting terminal tells the signal by transmitting terminal as control signal or usb signal.
If the signal is control signal, transmitting terminal is configured using the control signal.
If the signal is usb signal, which is sent by serial communication protocol (such as SPI, I2C, UART etc.)
To USB module, usb signal communication is carried out by transmitting terminal and PC machine.
Further, master machine can connect multiple transmitting terminals by a plurality of cable, and control transmitting terminal, host
The transmitting terminal that device is controlled by main control chip selection, and usb signal and control signal are transferred to transmitting terminal, corresponding transmitting terminal
By audio-video signal by network cable transmission to master machine, then it is output to display and is shown.
Further, corresponding quick control signal is issued by pressing the Mechanical course key of master machine, or passes through master
(such as infrared remote-controlled signal, 2.4G are wireless for the usb signal or other control signals for controlling chip monitoring Keyboard accelerator Macintosh
Remote signal, rs 232 serial interface signal etc.), and the usb signal or control signal are transmitted；One can also be increased in master machine simultaneously
A UI(User Interface) interface carry out device parameter setting, for example including but be not limited in UI interface display: produce
Product information, Product Status, usage mode etc..The display signal at the interface UI is issued from the main control chip of master machine, and main control chip can
To select display to show the interface UI or show the audio-video signal of transmitting terminal.
The present invention also provides the transmission devices of a kind of network cable transmission audio-video signal and serial signal, comprising: master machine,
Cable and transmitting terminal.
Master machine is provided with audio-video interface, USB interface, cable interface and control interface, audio-video interface connection display
Device or TV, USB interface connect USB device.
Transmitting terminal is provided with audio-video interface, USB interface, cable interface and control interface, audio-video interface and USB interface
The host controlled is connected, control interface is instructed for receiving external control instruction or externally sending.
It is provided with ac-coupled circuit, DC coupling circuit and filter circuit inside master machine and transmitting terminal, exchanges coupling
Close circuit, DC coupling circuit and filter circuit are connected on respective cable interface, DC coupling circuit with exchange
Coupling circuit are directly connected on cable interface, and filter circuit is connect with DC coupling circuit.
Be additionally provided with main control chip inside master machine, main control chip by electronic switch, filter circuit and coupling circuit with
Cable interface connection.Audio-video switch obtains audio-video AC differential signal by ac-coupled circuit connected with network cable simultaneously.
Transmitting terminal is internally provided with control chip, and control chip connects USB interface by USB module, and control chip passes through
Filter circuit, DC coupling circuit in transmitting terminal are connected to cable interface.
The filter circuit of master machine and the filter circuit of transmitting terminal respectively include: 2 groups of capacitor filters, 4 groups of low passes and
High-pass filtering circuit, 2 groups of capacitor filters are separately connected the third coffret and the 6th coffret of cable interface, cable
The 5th coffret, the 6th coffret, the 7th coffret and the 8th coffret of interface be separately connected one group of low pass and
High-pass filtering circuit.
Master machine is connected with transmitting terminal by cable, the first transmission line of cable, second transmission line, third transmission line,
Four transmission lines, the 5th transmission line, the 6th transmission line, the 7th transmission line and the 8th transmission line respectively with master machine and transmitting terminal cable
First coffret of interface, the second coffret, third coffret, the 4th coffret, the 5th coffret, the 6th biography
Defeated interface, the 7th coffret and the connection of the 8th coffret.
Further, simulated television or audio-video control circuit, simulated television or sound are also provided with inside transmitting terminal
Video control circuit connects audio-video interface, and simulated television or audio-video control circuit are by control chip controls.
Further, master machine is provided with multiple cable interfaces, and multiple cable interfaces are respectively connected with coupling circuit and filtering
Circuit, the main control chip of master machine are connected to the filter circuit of multichannel by multi-channel electronic switch.
Certainly, it is to understand for convenience to the number of transmission line in cable in the present invention, is not to limit cable biography with this
Defeated sequence, there is no substantial differences for eight transmission lines in cable, can according to need eight transmission lines of appropriate adjustment
Sequence.
The present invention has the advantages that
1. it is convenient and efficient by the way that audio-video signal, usb signal and control signal are coupled on a cable and are transmitted,
Equipment is simply light；
2. may be implemented to carry out Time-sharing control to multiple devices, and facilitate switching, control, shares；
3. by setting UI control interface and shortcut key, keyboard combination hot key, a variety of operation controlling parties such as serial ports control command
Formula improves controlling extent and convenient degree to equipment.
Detailed description of the invention
Fig. 1 is a kind of method and its transmission device of network cable transmission audio-video signal and serial signal described in embodiment 1
General principles figure；
Fig. 2 is host in the method and its transmission device of a kind of network cable transmission audio-video signal and serial signal described in embodiment 1
Concrete principle figure inside device；
Fig. 3 be a kind of network cable transmission audio-video signal described in embodiment 1 and serial signal method and its transmission device in emit
Concrete principle figure inside end；
Fig. 4 is a kind of network cable transmission audio-video signal and string that audio-video control circuit is provided in transmitting terminal described in embodiment 2
The method of row signal and its schematic diagram of transmission device；
Fig. 5 be embodiment 3 described in it is a kind of transmitting terminal setting audio-video control circuit in also include signal amplifier cable
Transmit the method for audio-video signal and serial signal and its schematic diagram of transmission device；
Fig. 6 be described in embodiment 6 it is a kind of can control it is multiple computers host, network cable transmission audio-video signal and serial signal
The schematic diagram of method and its transmission device.
Specific embodiment
Embodiment 1: referring to Fig.1-3, a kind of transmission device of network cable transmission audio-video signal and serial signal, comprising: main
Machine, cable and transmitting terminal.
Master machine is provided with audio-video interface, USB interface, cable interface, control interface, audio-video interface connection display
Device, USB interface connect USB device, and control interface connects external control equipment.
Transmitting terminal is provided with audio-video interface, USB interface, cable interface, control interface, audio-video interface and USB interface
Connect PC host or other signal source equipments；Control interface may include but be not limited to: other Industry Controls such as serial ports connect
Mouthful, wireless transmission interface is for example infrared, 2.4G interface.
Ac-coupled circuit, DC coupling circuit and filter circuit, the friendship are provided with inside master machine and transmitting terminal
Stream coupling circuit, DC coupling circuit and filter circuit are connected on respective cable interface, DC coupling circuit and
Ac-coupled circuit is directly connected on cable interface, and filter circuit is connect with DC coupling circuit.
The ac-coupled circuit of master machine comes out audio-video signal separation and Extraction, and DC coupling circuit and filter circuit will
In the control signal dc-couple to cable of master machine.
Audio-video signal is coupled on cable by the ac-coupled circuit of transmitting terminal to be transmitted, DC coupling circuit and filter
Wave circuit extracts the usb signal transmitted from master machine and control Signal separator.
Main control chip is additionally provided with inside master machine, main control chip is connect by filter circuit and DC coupling circuit with cable
Mouth connection, while audio-video switch obtains audio-video AC differential signal by ac-coupled circuit connected with network cable, in master control core
Under the control of piece, audio-video signal is output on display or TV by audio-video switch.
Transmitting terminal is internally provided with control chip, and control chip connects USB interface by USB module, and control chip passes through
Filter circuit, DC coupling circuit and ac-coupled circuit in transmitting terminal are connected to cable interface.
Specifically, the filter circuit of master machine and the filter circuit of transmitting terminal respectively include: 2 groups of capacitor filters, 4 groups
Low pass and high-pass filtering circuit, 2 groups of capacitor filters are separately connected the third coffret of cable interface and the 6th transmission connects
Mouthful, the 4th coffret, the 5th coffret, the 7th coffret and the 8th coffret of cable interface are separately connected one
Low pass and high-pass filtering circuit.Wherein filter circuit can be the in series or in parallel of RC filter circuit and lc circuit.
Master machine is connected with transmitting terminal by cable, the first transmission line of cable, second transmission line, third transmission line,
Four transmission lines, the 5th transmission line, the 6th transmission line, the 7th transmission line and the 8th transmission line respectively with master machine and transmitting terminal cable
First coffret of interface, the second coffret, third coffret, the 4th coffret, the 5th coffret, the 6th biography
Defeated interface, the 7th coffret and the connection of the 8th coffret.
By using the transmission device of above-mentioned a kind of network cable transmission audio-video signal and serial signal, with the following method
It is transmitted, the method as a kind of network cable transmission audio-video signal and usb signal:
Transmitting terminal arrives 4 pairs of audio-video AC differential signals in audio video transmission signal by eight transmission lines of cable
Master machine, master machine filter other low frequencies, DC component using ac-coupled circuit, extract audio-video AC differential signal.
Meanwhile usb signal is processed into serial signal, serial signal is then passed through filter circuit and DC coupling circuit
It is coupled on the 7th transmission line and the 8th transmission line of cable, passes through dc-couple and filter circuit in the other end of cable, also
Original goes out usb signal.
Further, the HPD signal in audio-video signal can also be coupled to by filter circuit and DC coupling circuit
The third transmission line of cable, I2C control signal are coupled to the 4th transmission line of cable by filter circuit and DC coupling circuit
On the 5th transmission line, at the same the other end of cable pass through DC coupling circuit and filter circuit, restore HPD signal and
I2C controls signal.
Further, control signal and usb signal can be processed into serial signal by master machine, and be arrived by network cable transmission
Transmitting terminal tells the signal by transmitting terminal as control signal or usb signal；If the signal is control signal, using should
Control signal is configured transmitting terminal；If the signal be usb signal, by the signal by serial communication protocol (such as
SPI, I2C, UART etc.) it is sent to USB module, usb signal communication is carried out by transmitting terminal and PC machine.
Embodiment 2: referring to Fig. 4, the transmission device of above-mentioned a kind of network cable transmission audio-video signal and serial signal, transmitting
End is internal can also to be arranged audio-video control circuit, and audio-video control circuit connects audio-video interface, and by the control of transmitting terminal
Chip controls processed；Audio-video control circuit includes audio-video control signal processor.
Specifically, including memory and electrical level output circuit in the audio-video control signal processor.
The I2C control signal of audio-video interface is connect with memory, and the corresponding EDID letter of display is stored in memory
Breath, I2C control signal by that can obtain corresponding EDID information with memory connection, no longer need to through network cable transmission to host
Device.
The HPD signal of audio-video interface is connect with electrical level output circuit, and electrical level output circuit passes through output high level or low
Level can be used as the response of HPD signal, and when electrical level output circuit exports high level, HPD signal detects that connection is good, level
When output circuit exports low level, HPD signal detects that connection disconnects.
The method specifically used, as to a kind of above-mentioned network cable transmission audio-video signal, usb signal and control signal
The further explanation of method, the specific method is as follows:
Transmitting terminal arrives 4 pairs of audio-video AC differential signals in audio video transmission signal by eight transmission lines of cable
Master machine, master machine filter other low frequencies, DC component using ac-coupled circuit, extract audio-video AC differential signal；
HPD signal and I2C control signal in audio-video signal are handled in the audio-video signal processor of transmitting terminal.
Meanwhile control signal and usb signal are processed into serial signal, then serial signal by filter circuit and straight
Stream coupling circuit are coupled on the 7th transmission line and the 8th transmission line of cable, pass through dc-couple and filter in the other end of cable
Wave circuit restores control signal and usb signal.
Embodiment 3: referring to Fig. 5, on the basis of embodiment 2, a kind of network cable transmission audio-video signal and serial signal
Transmission device, the audio-video control circuit inside transmitting terminal also includes signal amplification circuit.
The audio-video signal connection signal amplifying circuit of audio-video interface, signal amplification circuit pass through ac-coupled circuit again
It is connect with the cable interface of transmitting terminal, to increase transmission range.
Audio-video control circuit connects the control chip of transmitting terminal, and control chip can control whether enable, and setting
Audio-video control circuit.
The method specifically used, as method to a kind of above-mentioned network cable transmission audio-video signal and serial signal into one
Step explanation, the specific method is as follows:
Transmitting terminal arrives 4 pairs of audio-video AC differential signals in audio video transmission signal by eight transmission lines of cable
Master machine, master machine filter other low frequencies, DC component using ac-coupled circuit, extract audio-video AC differential signal；
HPD signal and I2C control signal in audio-video signal are handled in the audio-video signal processor of transmitting terminal.
Meanwhile control signal and usb signal are processed into serial signal, then serial signal by filter circuit and straight
Stream coupling circuit are coupled on the 7th transmission line and the 8th transmission line of cable, pass through dc-couple and filter in the other end of cable
Wave circuit restores control signal and usb signal.
Further, 4 pairs of audio-video AC differential signals in audio-video signal can be carried out by signal amplification circuit
Amplification, is then transmitted by cable again.
Embodiment 4: on the basis of embodiment 1 or embodiment 2 or embodiment 3, further, a kind of above-mentioned cable is passed
The method and its transmission device of defeated audio-video signal and serial signal, transmitting terminal is interior to be directed to audio-video signal, can combine use
Embodiment 1, embodiment 2, embodiment 3, any two in this 3 kinds of modes or this 3 kinds are combined in transmitting terminal, constitute more
Function transmitting terminal audio-video processing mode in actual work, is selecting wherein certain sound view by the control chip of transmitting terminal
Frequency processing mode.
Embodiment 5: further, above-mentioned on the basis of embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4
A kind of transmission device of network cable transmission audio-video signal and serial signal, video switch is electronic selection switch, electricity in master machine
The interface UI that son selection switch can choose the audio-video signal transmitted from transmitting terminal or transmit from main control chip
Signal.
The method specifically used makees furtherly the method for a kind of above-mentioned network cable transmission audio-video signal and serial signal
Bright, the specific method is as follows:
Increase the setting that the interface UI carries out device parameter, the display of product information and use information, the UI in master machine
The main control chip of the display information from host computer device at interface issues, and and the audio-video signal that is transmitted from transmitting terminal by one
Video switch is output to display, and display is shown in the content at the interface UI or the audio-video signal of transmitting terminal
Hold；Mechanical course key by pressing master machine issues corresponding quick control signal, or monitors keyboard by main control chip
The usb signal of shortcut key combinations, or received by control interface from external control signal, and by cable to the USB
Signal or control signal are transmitted.
Embodiment 6: referring to Fig. 6, further, in above-described embodiment 1 or the base of embodiment 2 or embodiment 3 or embodiment 4
On plinth, a kind of transmission device of network cable transmission audio-video signal and serial signal, master machine is provided with multiple cable interfaces, multiple
Cable interface is respectively connected with DC coupling circuit, ac-coupled circuit and filter circuit, and the main control chip of master machine passes through multichannel
Electronic switch is connected to the filter circuit of multichannel.
Master machine can connect multiple transmitting terminals simultaneously and carry out Time-sharing control, based on the above embodiment a kind of cable
The method for transmitting audio-video signal and serial signal makees further supplement, the method is as follows:
Master machine can connect multiple transmitting terminals by a plurality of cable, and control transmitting terminal, and master machine passes through master control core
The transmitting terminal of piece selection control, and usb signal and control signal are transferred to transmitting terminal, corresponding transmitting terminal is by audio-video signal
By network cable transmission to master machine, and final output is shown to display.
Certainly, the above is only better embodiments of the present invention, and use scope of the invention is not limited with this, therefore, it is all
Equivalent change is made in the principle of the invention should be included in the protection scope of invention.
Claims (10)
1. a kind of method of network cable transmission audio-video signal and serial signal, it is characterised in that:
Transmitting terminal arrives 4 pairs of audio-video AC differential signals in audio video transmission signal by eight transmission lines of cable
Master machine, master machine filter other low frequencies, DC component using ac-coupled circuit, extract audio-video AC differential signal；
HPD signal and I2C control signal in audio-video signal are handled in the audio-video signal processor of transmitting terminal；
Meanwhile usb signal and control signal by being processed into serial signal, then serial signal by filter circuit and straight
Stream coupling circuit are coupled on the 7th transmission line and the 8th transmission line of cable, pass through dc-couple and filter in the other end of cable
Wave circuit restores usb signal and control signal.
2. the method for a kind of network cable transmission audio-video signal and serial signal according to claim 1, it is characterised in that: institute
State the 4th transmission that the HPD signal in audio-video signal can also be coupled to cable by filter circuit and DC coupling circuit
Line, I2C control signal are coupled on the 4th transmission line and the 5th transmission line of cable by filter circuit and DC coupling circuit,
Pass through DC coupling circuit and filter circuit in the other end of cable simultaneously, restores HPD signal and I2C control signal.
3. the method for a kind of network cable transmission audio-video signal and serial signal according to claim 1, it is characterised in that: sound
4 pairs of audio-video AC differential signals in vision signal can be amplified by signal amplification circuit, then pass through cable again
It is transmitted.
4. the method for a kind of network cable transmission audio-video signal and serial signal according to claim 1, it is characterised in that: main
Machine can be processed into control signal and usb signal serial signal, and be differentiated to transmitting terminal by transmitting terminal by network cable transmission
The signal is control signal or usb signal out；
If the signal is control signal, transmitting terminal is configured using the control signal；
If the signal is usb data signal, USB module is sent by serial communication protocol by the signal, passes through transmitting terminal
Usb signal communication is carried out with PC machine.
5. the method for a kind of network cable transmission audio-video signal and serial signal according to claim 1-4, special
Sign is: master machine can connect multiple transmitting terminals by a plurality of cable, and control transmitting terminal, and master machine passes through master control
The transmitting terminal of chip selection control, and usb signal and control signal are transferred to transmitting terminal, corresponding transmitting terminal believes audio-video
Number by network cable transmission to master machine, be then output to display and shown.
6. the method for a kind of network cable transmission audio-video signal and serial signal according to claim 1-4, special
Sign is: the Mechanical course key by pressing master machine issues corresponding quick control signal, or is monitored by main control chip
The usb signal of Keyboard accelerator Macintosh, and the usb signal transmits according to described pair；It can also increase simultaneously in master machine
One interface UI carries out the setting of device parameter, and the display signal at the interface UI is issued from the main control chip of master machine, master control
Chip can select display to show the interface UI or show the audio-video of transmitting terminal by controlling audio-video switch.
7. a kind of transmission device of network cable transmission audio-video signal and serial signal, comprising: master machine, cable and transmitting terminal,
It is characterized in that:
Master machine is provided with audio-video interface, USB interface, cable interface and control interface, and audio-video interface connects display,
USB interface connects USB device, the external control equipment of control interface；
Transmitting terminal is connected provided with audio-video interface, USB interface, cable interface, control interface, audio-video interface with USB interface
PC host；
Ac-coupled circuit, DC coupling circuit and filter circuit, the exchange coupling are provided with inside master machine and transmitting terminal
Close circuit, DC coupling circuit and filter circuit are connected on respective cable interface, the DC coupling circuit and
Ac-coupled circuit is directly connected on cable interface, and filter circuit is connect with DC coupling circuit；
Main control chip is additionally provided with inside master machine, main control chip passes through electronic switch, filter circuit and coupling circuit and cable
Interface connection, main control chip select the input content of audio-video interface by control video switch；
Transmitting terminal is internally provided with control chip, and control chip connects USB interface by USB module, and control chip passes through transmitting
Filter circuit, DC coupling circuit in end are connected to cable interface；
The filter circuit of the filter circuit of the master machine and the transmitting terminal respectively include: 2 groups of capacitor filters, 4 groups it is low
Logical and high-pass filtering circuit, 2 groups of capacitor filters are separately connected the third coffret and the 6th coffret of cable interface,
The 4th coffret, the 5th coffret, the 7th coffret and the 8th coffret of cable interface be separately connected one it is low
Logical and high pass filter circuit；
Master machine is connected with transmitting terminal by cable, first transmission line, second transmission line, third transmission line, the 4th biography of cable
Defeated line, the 5th transmission line, the 6th transmission line, the 7th transmission line and the 8th transmission line respectively with master machine and transmitting terminal cable interface
The first coffret, the second coffret, third coffret, the 4th coffret, the 5th coffret, the 6th transmission connect
Mouth, the 7th coffret and the connection of the 8th coffret.
8. the transmission device of a kind of network cable transmission audio-video signal and serial signal according to claim 7, feature exist
In: audio-video control circuit can also be set inside the transmitting terminal, audio-video control circuit connects audio-video interface, and by
The control chip controls of transmitting terminal；The audio-video control circuit includes audio-video control signal processor and signal amplification electricity
Road.
9. according to a kind of described in any item transmission devices of network cable transmission audio-video signal and serial signal of claim 7-8,
It is characterized by: the master machine is provided with multiple cable interfaces, multiple cable interfaces are respectively connected with ac-coupled circuit, direct current
Coupling circuit and filter circuit, the main control chip of the master machine by multi-channel electronic switch be connected to multichannel filter circuit and
Coupling circuit.
10. the transmission device of a kind of network cable transmission audio-video signal and serial signal according to claim 9, feature exist
In: the video switch connected between the master machine main control chip and audio-video interface is selection electronic switch.
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| CN201710444438.2A CN109151363A (en) | 2017-06-13 | 2017-06-13 | A kind of method and its transmission device of network cable transmission audio-video signal and serial signal |
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| CN201710444438.2A CN109151363A (en) | 2017-06-13 | 2017-06-13 | A kind of method and its transmission device of network cable transmission audio-video signal and serial signal |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426120A (en) * | 2008-10-23 | 2009-05-06 | 宁波奥科电子技术有限公司 | Method for expanding HDMI and/or DVI interface by single Ethernet cable for long distance connection |
| CN104754275A (en) * | 2013-12-30 | 2015-07-01 | 中国科学院沈阳自动化研究所 | Co-cable transmission device and method for small remotely controlled underwater robot |
| CN205622758U (en) * | 2016-01-19 | 2016-10-05 | 周明捷 | A controlling means for transmission of main frame interface signals |
| CN106412686A (en) * | 2016-09-26 | 2017-02-15 | 龙迅半导体（合肥）股份有限公司 | Data transmission method and single-networkcable extender for HDMI (High Definition Multimedia Interface) signals |
| CN207075051U (en) * | 2017-06-13 | 2018-03-06 | 深圳市联鸿泰电子有限公司 | A kind of transmission equipment of network cable transmission audio-video signal and serial signal |
-
2017
- 2017-06-13 CN CN201710444438.2A patent/CN109151363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426120A (en) * | 2008-10-23 | 2009-05-06 | 宁波奥科电子技术有限公司 | Method for expanding HDMI and/or DVI interface by single Ethernet cable for long distance connection |
| CN104754275A (en) * | 2013-12-30 | 2015-07-01 | 中国科学院沈阳自动化研究所 | Co-cable transmission device and method for small remotely controlled underwater robot |
| CN205622758U (en) * | 2016-01-19 | 2016-10-05 | 周明捷 | A controlling means for transmission of main frame interface signals |
| CN106412686A (en) * | 2016-09-26 | 2017-02-15 | 龙迅半导体（合肥）股份有限公司 | Data transmission method and single-networkcable extender for HDMI (High Definition Multimedia Interface) signals |
| CN207075051U (en) * | 2017-06-13 | 2018-03-06 | 深圳市联鸿泰电子有限公司 | A kind of transmission equipment of network cable transmission audio-video signal and serial signal |
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Effective date of registration: 20240503 Address after: 301B, Building 5, Fulongte Industrial Park, Huaxing Road, Langkou Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Beiling Intelligent Electronics Co.,Ltd. Country or region after: China Address before: 518000, Building A, Building 6, Building A, Zhenhua Industrial Park, Heping Road, Longhua Office, Longhua New District, Shenzhen City, Guangdong Province, China, Area A and C Applicant before: SHENZHEN LIANHONGTAI ELECTRONICS CO.,LTD. Country or region before: China |